you may have already checked, but to me it sounds like you have a loose connection at the battery
brakes that are dirty or worn out. also check your shock absorbers or springs. or a worn bearing
to keep an object moving the way it is already moving .
they have already moved
The only time this isn't necessary is if the carpet is already very clean or recently replaced.
The only thing that can do that is force.
If it's not already moving, then it takes force to make it start.If it is already moving, and there's nothing making it stop,then it doesn't take anything to keep it moving.
Brakes CV joints or bearings.
Does the squeak stop when you apply brakes? If so could be wear sensors on brake pads indicating that they are worn and need replacing
The air moving away from the furnace has to be replaced.
If its already moving.
Maybe he's already dead!?!